docs: def _supported_imts(self):
          """
          Updates the list of supported IMTs from the tables
          """
          imt_list = []
          for key in self.imls:
              if "SA" in key:
                  imt_list.append(imt_module.SA)
              elif key == "T":
                  continue
              else:
                  try:
                      factory = getattr(imt_module, key)
                  except Exception:
                      continue
                  imt_list.append(factory)
          return imt_list